package com.geektime.hello.service;

import com.geektime.hello.model.Coupon;

import java.util.List;
import java.util.Map;

public interface CouponService {

    List<Coupon> findCouponList();

    List<Coupon> findCouponListByHql();

    List<Map<String, Object>> findCouponList4Jdbc();

}
